NVIDIA Posts New OpenGL Extensions For Multi-GPU Rendering

[phoronix]

Phoronix: NVIDIA Posts New OpenGL Extensions For Multi-GPU Rendering

OpenGL is still evolving and days ahead of SIGGRAPH 2019, NVIDIA has published a set of new GL extensions for improving multi-GPU rendering...

http://www.phoronix.com/scan.php?page=news_item&px=NVIDIA-OpenGL-Multicast2

[schmidtbag]

I'm not sure I understand why they're suddenly taking another interest in multi-GPU rendering. I kinda assumed they just gave up on it. Not that I'm complaining.

And yes, I know about NVLink and multi-GPU compute, but that's typically for workstations and servers.

[skeevy420]

I'm not sure I understand why they're suddenly taking another interest in multi-GPU rendering. I kinda assumed they just gave up on it. Not that I'm complaining.

And yes, I know about NVLink and multi-GPU compute, but that's typically for workstations and servers.

My guess would be to try to take away some of AMD's Linux thunder as of late by trying to provide a feature for their GPUs that AMD doesn't have on Linux.

Michael &tildearrow
Found a typo:

NVIDIA will be coming wit similar

[shmerl]

Anyone interested in multi-GPU rendering should use Vulkan, but it's not supported in Vulkan drivers on Linux either.

[cl333r]

Anyone interested in multi-GPU rendering should use Vulkan, but it's not supported in Vulkan drivers on Linux either.

Are you saying multi-GPU rendering on Vulkan on Linux doesn't work? Or doesn't work with a particular driver?

[shmerl]

Are you saying multi-GPU rendering on Vulkan on Linux doesn't work? Or doesn't work with a particular driver?

Mesa doesn't support VK_KHR_device_group* extensions yet. No idea about Nvidia blob.

[aufkrawall]

Mesa doesn't support VK_KHR_device_group* extensions yet. No idea about Nvidia blob.

Wasn't this a requirement for Vulkan 1.1?

[shmerl]

Wasn't this a requirement for Vulkan 1.1?

So Mesa doesn't support everything from 1.1 yet.

[aufkrawall]

So Mesa doesn't support everything from 1.1 yet.

Huh, indeed. But it's supported by amdvlk though (both proprietary and open).

[shmerl]

Huh, indeed. But it's supported by amdvlk though (both proprietary and open).

I didn't check. Did you see code implementation for it? Mesa reports these extensions too, but it's just a stub.